19464940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{859}}^1$

素因数の和:982

約数の個数: 48

約数和(自身を含む): 45077760

約数和(自身を除く): 25612820

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 103, 110, 206, 220, 412, 515, 859, 1030, 1133, 1718, 2060, 2266, 3436, 4295, 4532, 5665, 8590, 9449, 11330, 17180, 18898, 22660, 37796, 47245, 88477, 94490, 176954, 188980, 353908, 442385, 884770, 973247, 1769540, 1946494, 3892988, 4866235, 9732470, 19464940]

約数ペア:

[(1, 19464940), (2, 9732470), (4, 4866235), (5, 3892988), (10, 1946494), (11, 1769540), (20, 973247), (22, 884770), (44, 442385), (55, 353908), (103, 188980), (110, 176954), (206, 94490), (220, 88477), (412, 47245), (515, 37796), (859, 22660), (1030, 18898), (1133, 17180), (1718, 11330), (2060, 9449), (2266, 8590), (3436, 5665), (4295, 4532)]